Gas-engine.



No. 650,549. I PatentedMay 29, I900.

F. W. TUEDT.

GAS ENGINE. (Application filed Jan. so, 1899.

(No Model.)

WITNESSES UNITED STATES 1 PATENT OFFIC rnnnnmcx w. TOEDT, or HAMBURG, lOWA.

GAS-ENGINE.

SPECIFfECATION forming part of Letters Iatent No. 650,549, dated May 29, 1900.

Application filed ma 30,1899. Serial in. 703,920. (No model.) I

To all whom, it may concern:

Be it known that I, FREDERICK W. TOEDT, a citizen of the United States, residing at Ham burg, in the county of Fremont and State of Iowa, have invented new and useful Improvements in Gas-Engines, of which the following is a specification.

This invention relates to certain new and useful improvements in gas-engines; and it consists in the construction and organization of the parts thereof whereby I provide means for supplying the gas into serpentine gaschambers in the cylinder-heads, in which chambers the gas is exploded to actuate the piston-head, which piston-head in its movement opposite to that which it is forced by the explosion ejects the spent product out of the cylinder, means also being provided for forcing the gas into the cylinder-heads, as will be hereinafter set forth.

In the drawings, Figure 1 is a sectional view taken through the main cylinder and through the exhaust and pump cylinder. Fig. 2 is an end elevation, the rods attached to the piston-heads being shown in section. Fig. 3 is a detail sectional view of a chamber having valves and openings, the same being interposed between the cylinder-heads of the main cylinder and the pump-cylinder. Fig. 4 is a vertical sectional view through one of the cylinder-heads, and Fig. 5 is a sectional view of a modified form of one of the cylinder-heads.

The main cylinder is surrounded by a water-chamber a, and to the ends of said cylinder are attached heads B, which have therein serpentine gas-chambers b,which open or lead into the cylinder and through the outer edges of the heads of the cylinder, and connected with the gas-chambers b are chambers E. The gas is exploded in these serpentine or elongated chambers, the expansion of which actuates the piston. Through the center of the cylinder-heads there are central openings 1) for the escape of the products of the exploded gas, and through one of these openings the piston-rod b is passed, the pipes connected to the opening having a stuffing-box, through which the piston-rod passes.

tubes D, which have branch or oil-feed pipes d. The pipes'D lead into chambers E, which are attached to the cylinder-heads, so as to communicate with the serpentine chambers b therein. check-valves e e, and between the valves there is a gas-inlet opening c and to this opening one end of the coiled pipe D is connected, and below or to one side of the opening e so as to be below the valve-seat 6, there is an opening e through which air and gas or other suitable explosive mixture may be admitted to the casing.

Gas, either natural or manufactured, is supplied to the pump-cylinder Othrough a suitable pipe, and the amount of such gas is regulated by a suitable valve and passes through openings 0, which are positioned at a suitable distance from the heads of the pump-cylinder, these openings being surrounded by ways or ducts c, which communicate with each other by way of a pipe 0', which has two branches and a centrally-positioned regulating-valve 0 which may cut off the gas-supply pipe 0 To the central or exhaust openings l) in the heads of the cylinder A are attached pipes or ways F F, each having suitable connections which open into an exhaust-cylinder G through the heads thereof, said cylinder having exhaust ports or openings g,which are centrally located and are surrounded by a way 9, which connects with the exhaustpipe G.

The piston of the cylinder A and the piston of the pump-cylinder are both connected so as to have the same stroke, andto attain this end the piston-rods may be coupled together.

The chambers E are provided with 7 The valve in the exhaust-cylinder G is in- V maximum amount of heat will be absorbed by the cylinder-heads, and is utilized to expand or vaporize the explosive medium which is forced into the serpentine chambeLS there;

from the supply-pipe, and after the piston passes one of the series of openings e the gas valved mixing-chamber E. The gas which passes into the coil D may be enriched by letting into the coil oil, which is fed thereto through a pipe d. The oil-feed pipe cl is conne'cted with an oil-supp1y in any suitable manner, and said pipe may have a check-valve of any suitable construction. To vaporize the oil which is let into the coil D, said coil is kept heated by a lamp or gas-jet or in any suitable manner, and it is obvious that the temperature of the gas which is forced into the coil is raised as it is forced therethrough. The explosive mixture, consisting of gas enriched by a vapor from a hydrocarbon oil, is forced into the valved chamber E, where it is further mixed, and from thence to the serpentine passage in the cylinder-head, where it is compressed by the action of the piston in the main cylinder until the piston therein moves near enough to the cylinder-head to cause the usual igniting device to be brought into operative position. The gas in the serpentine passage in the cylinder-head is acted on by being mechanically compressed by the piston and by being expanded by the absorp tion of heat from the head of the cylinder. The'serpentine passage serves as a chamber in which the gas is mixed before being exploded. The explosion drives the piston-head to the opposite end of the-cylinderjan'd during said movement the piston in the pump-cylinder moves in the same direction. A back flow of the residue or products of combustion is prevented by the check-Valve e, and the products of combustion escape from the cylinder through the central openings in the cylinderhead, passing therefrom through the pipes into the cylinder G, the valve in the cylinder G being attached to the eccentric, so that its cylinder from wliichthe spent gases are ejected and closed while the explosive force is acting upon the main piston. To form a proper explosi e mixture, the regulating-valve c is setfso that the pump-piston when moved in one direction will draw through the pipes and the openings 0 the desired amount of gas, and at the same time will also draw air through the pipe 1]); the air entering the lower section of the valved chamber E through the opening 6 the valve 6 being lifted by the suction prod uced by-the pump-piston. At the same time 7 ,that the air} enters the opposite end of the is forced through the coil D and into the pump-piston from where the gas is drawn into the same oil may be fed into one of the feedpipes D through the oilfeed pipe carried thereby. It will be obvious'tha't the explosive mixture is formed in the pump-cylinder at one stroke thereof, so that on the next stroke it will be forced through the pipe D into the valved chamber E, lifting the valve ethereof, and enters the cylinder through the serpentine passage in the cylinder-head.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination in a gas-engine constructed substantially as shown and provided with cylinder-heads having serpenti ue chambers therein, of valved mixing-chambers E E connected to the cylinder-heads, each chamber having a gas-inlet opening 6 between the Valves therein and an air-inlet opening 6 below one of the valves substantially as shown and for the purpose set forth.

2. In a gas-engine, the combination with a main cylinder having heads with serpentine chambers therein, valved chambers E E with openings, one of said openings being connected with the serpentine chambers inthe cylinder-heads, coiled pipes D having oil-inlet pipes (Z, said coiled pipes being connected to the valved chambers E E and to the heads of a pump-cylinder, the pump-cylinder having gas-supply openings 0 0 near each end and a pipe 0 connected with said openings, substantially as shown and for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit nesses. 1

.T. F. RIEDY, I. S. GILLMAN. 

